'Rhinestone' definitions:

Definition of 'rhinestone'

From: WordNet
noun
An imitation diamond made from rock crystal or glass or paste

Definition of 'Rhinestone'

From: GCIDE
  • Rhinestone \Rhine"stone`\, n. [Cf. G. rheinkiesel Rhine quartz.] A colorless stone of high luster, made of paste. It is much used as an inexpensive ornament. [1913 Webster]